Spike Lee, best known for his movies dealing with race and discrimination, is throwing his support behind his fellow native Brooklynite, Democratic presidential candidate Bernie Sanders, the senator from Vermont.

The film director, producer and activist recorded a 60-second radio ad for the Sanders campaign to be broadcast in South Carolina.

"Wake up, wake up, South Carolina!" he said in the ad, calling Bernie "my brother." He referred to the democratic socialist's independence from Wall Street as why Sanders can be trusted to "do the right thing," the title of his classic 1989 movie about racial tension in a Brooklyn neighborhood.

He also talked about Sanders' involvement in the civil rights movement.

The RealClear Politics average of polls has Hillary Clinton leading Sanders by more than 24 percentage points in South Carolina. Clinton has long enjoyed strong support from the African-American community. The state's Democratic voters go to the polls on Saturday.

Listen to the ad below:

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